4.0.0 com.baeldung spring-protobuf 0.1-SNAPSHOT spring-protobuf org.springframework.boot spring-boot-starter-parent 1.2.4.RELEASE com.google.protobuf protobuf-java 3.0.0-beta-3 com.googlecode.protobuf-java-format protobuf-java-format 1.4 org.springframework.boot spring-boot-starter-web org.springframework.boot spring-boot-starter-test test org.apache.httpcomponents httpclient 4.5.2 org.apache.maven.plugins maven-compiler-plugin 3.3 1.8 1.8